Question

17. Study the data of the following the categories A Band
Category Name of the
element
А
M
B
P
C
AL
(i) From the given three categories A, B and C pick the one which
forms Dobereiner's Triads.
(ii) Why did Mendeleev placed elements of category A, B and C in three
different groups?
(ii) Is Newland law of octaves applicable to all the three categories?
Give reason to justify your answer​

Answer 1

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